I made these a long time ago back when I was making cardboard benno drawers
. Since there wasn't much interest in those, I didn't bother making a step by step for these, but they are based on the same method.
But I have to say they are one of the handiest improvements around here for organizing a cluttered kitchen shelf and built out of mostly recycled materials.
I like the drawer paradigm better than the rotating dish version of spice racks because the round shape of the rotating disk sacrifices a lot of space in the cupboard. I also admired the cubby hole spice rack Instructable
, but in this case you must second guess the form factor well in advance.